Table 7. Anti-nutritional analysis of MPT leaves in relation to season of harvesting (n = 36).
| Multipurpose Tree Species (MPTs) | Phenol content (%) | Nitrate content (ppm) | Saponin content (%) | Hydrocyanic acid (mg/100g DM) | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S1 | S2 | S3 | S4 | Mean | S1 | S2 | S3 | S4 | Mean | S1 | S2 | S3 | S4 | Mean | S1 | S2 | S3 | S4 | Mean | |
| A. catechu | 15.33 | - | 13.08 | 12.58 | 13.67h | 0.00 | - | 15.27 | 0.00 | 5.09c | 27.68 | - | 22.04 | 28.06 | 25.93i | 0.00 | - | 0.06 | 0.00 | 0.02ab |
| A. chinensis | 10.13 | 3.57 | 5.97 | 8.97 | 7.16de | 2.70 | 0.87 | 6.30 | 0.00 | 2.47ab | 11.72 | 15.84 | 21.38 | 12.64 | 15.39efg | 0.10 | 0.00 | 0.00 | 0.00 | 0.03b |
| B. variegata | - | 7.60 | 11.38 | 15.18 | 11.39g | - | 6.08 | 0.00 | 12.50 | 6.19c | - | 15.15 | 12.42 | 14.41 | 13.99cdef | - | 0.00 | 0.00 | 0.00 | 0.00a |
| C. australis | 5.73 | 1.43 | 2.75 | - | 3.30ab | 1.33 | 1.20 | 0.00 | - | 0.84a | 9.52 | 13.55 | 12.21 | - | 11.76cde | 0.10 | 0.15 | 0.00 | - | 0.08d |
| F. roxburghii | 11.21 | 3.49 | 6.18 | 6.84 | 6.93de | 0.00 | 6.20 | 9.43 | 6.13 | 5.44cd | 20.93 | 9.39 | 12.41 | 7.70 | 12.61cdef | 0.01 | 0.00 | 0.00 | 0.11 | 0.03b |
| G. optiva | 4.80 | - | 2.90 | 4.40 | 4.03bc | 14.53 | - | 3.13 | 0.13 | 5.93c | 2.25 | - | 8.73 | 5.21 | 5.40a | 0.00 | - | 0.00 | 0.00 | 0.00a |
| L. leucocephala | 10.10 | 21.23 | 22.20 | 7.92 | 15.36h | 3.23 | 4.28 | 0.00 | 0.00 | 1.88ab | 18.10 | 13.52 | 15.17 | 20.71 | 16.87fgh | 0.02 | 0.00 | 0.00 | 0.00 | 0.01a |
| M. composita | - | 3.41 | 8.49 | - | 5.95cd | - | 14.20 | 17.50 | - | 15.85g | - | 5.43 | 10.88 | - | 8.16abc | - | 0.12 | 0.00 | - | 0.06a |
| M. serrata | 2.71 | 1.42 | 0.37 | - | 1.50a | 0.00 | 7.63 | 7.43 | - | 5.02c | 16.24 | 2.64 | 2.17 | - | 7.02ab | 0.02 | 0.00 | 0.00 | - | 0.01a |
| O. glandulifera | 3.52 | 5.29 | 6.98 | 14.31 | 7.53de | 0.00 | 24.50 | 2.73 | 0.00 | 6.81de | 23.36 | 8.55 | 17.90 | 25.00 | 18.70gh | 0.00 | 0.00 | 0.00 | 0.00 | 0.00a |
| O. ojeinensis | - | 2.70 | 4.64 | 3.62 | 3.65abc | - | 5.37 | 0.00 | 0.00 | 1.79ab | - | 11.17 | 24.45 | 26.41 | 20.68h | - | 0.00 | 0.00 | 0.00 | 0.00a |
| P. floribundum | 3.54 | 1.32 | 7.21 | 5.86 | 4.40bc | 4.99 | 0.00 | 0.73 | 21.43 | 6.79de | 23.22 | 30.12 | 22.90 | 32.40 | 27.16i | 0.00 | 0.00 | 0.00 | 0.00 | 0.00a |
| Q. glauca | 9.42 | 4.19 | 12.68 | 7.26 | 8.39ef | 0.00 | 19.33 | 12.07 | 0.00 | 7.85e | 4.79 | 10.10 | 19.30 | 24.14 | 14.58cdefg | 0.11 | 0.00 | 0.00 | 0.13 | 0.06c |
| Q. leucotrichophora | 9.37 | 6.07 | 10.26 | 6.23 | 7.98de | 14.43 | 1.10 | 28.03 | 18.53 | 15.53g | 4.69 | 6.58 | 14.12 | 16.10 | 10.37bcd | 0.00 | 0.00 | 0.00 | 0.00 | 0.00a |
| S. tetrasperma | 12.76 | 8.29 | 10.69 | - | 10.58fg | 27.23 | 3.50 | 7.70 | - | 12.81f | 17.07 | 30.48 | 13.23 | - | 20.26h | 0.00 | 0.00 | 0.00 | - | 0.00a |
| Mean | 8.22a | 5.39b | 8.39a | 8.47a | 5.70a | 7.25b | 7.36b | 5.34a | 14.96a | 13.27a | 15.29a | 19.34b | 0.03c | 0.02b | 0.00a | 0.02b | ||||
| CD0.05 | MPTs = 2.31; S = 1.19; | MPTs = 1.42; S = 0.74; | MPTs = 4.43; S = 2.29; | MPTs = 0.02; S = 0.01; | ||||||||||||||||
| MPTs × S = 1.54 | MPTs × S = 0.95 | MPTs × S = 2.95 | MPTs × S = 0.02 | |||||||||||||||||
S1- Spring (March-April); S2- Summer (May-June); S3- Autumn (September-November); S4- Winter (December-February).
Means followed by different letters are significantly different (P<0.05)